Review by Anonymous for SE Battery Tester
Rating:
Just as good as the more expensive ones, it could really benefit from a spring but you can use a rubber band from the vegetable section at the grocery store.

The red slider is adjustable and comes in contact with the Positive ( + ) tip of the battery but the battery can slip out unless you have tighter than normal grip on the red slider and black base that is also the gauge.

OR, you can just take the wide rubber bands that come on a stalk of carrots or broccoli and wrap it around the back of the slider and the base. See my user uploaded photo.

I’d recommend this,

Review by trebe for SE Battery Tester
Rating:
This review is for the SE BT20 battery tester, which is a good, low cost, easy to use tester, that provides basic information about the condition of a battery. The tester has three ranges, `Good’ (green), Low (yellow), and `Replace’ (red). The sliding red contact is adjusted manually.

The tester is designed to work with various types of 1.5 volt batteries (AAA, AA, C, D, disc or button type). Do not try testing a battery of a higher voltage, as you may fry a resistor, blow a fuse, or otherwise damage the tester. There is a separate set of contacts for testing 9 volt batteries.

To precisely measure a battery’s actual output, a voltmeter would be used. A tester like the BT20 only provides a rough idea of battery strength. A new 1.5 volt, non-rechargeable battery, delivering the full 1.5 volts, should read at the top end of the green scale. Rechargeable batteries (AA, AAA, C and D size) are designed to produce only 1.2 volts at full output. Because this is 80 percent of the 1.5 volt maximum the tester is rated for, a NiMH battery will normally read somewhere in the middle of the green section. This may lead some to believe that the battery is `weak’, when it is actually at its full rated power. While a lower reading is normal for a NiMH battery, a 1.5 volt non-rechargeable battery with the same reading, is actually down about 20 percent from full voltage, and may not have that much useful life left. Rechargeable 9 volt batteries are rated at only 7.2 volts, and would similarly produce lower readings, even at full power.

If you want a basic tester for 1.5 volt batteries, this is a good choice. If you need more precision, look at a voltmeter or multimeter.

Review by Ray-Ray for SE Battery Tester
Rating:
I use batteries a lot. This tells me instantly if a battery still has juice or not. It is great, and I use it all the time. No more guessing games. I like that it runs on it’s own, off of the strength of the battery being tested. Since I often use re-chargeable batteries which might run out of juice if not used for a while, this lets me know if it’s low on power or not.

PS: you must place the battery on the contacts correctly and hold it in place for the meter to read properly, but that’s really no problem.

Review by Andrew Johnson for SE Battery Tester
Rating:
Love how easily this works and it does the job well it seems. The batteries do tend to fall out when I’m trying to measure them because the Red Part of the tester slides up and down (to accomodate different battery sizes) and there’s no way of keeping the batteries securely in place. Therefore a bit fiddly. The company mailed it very quickly and I am proud of this item that I’ve been long overdue in buying.

Review by Sheldon Lewis for SE Battery Tester
Rating:
With all the toys, remotes and other items that need batteries, this is the best gadget to have around. Checks almost every type battery for power and indicates amount of life (if any) is left. Price is also right.